1 files changed, 54 insertions, 17 deletions

diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 844f2a89afbc..fdde0bedaa90 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -27,6 +27,7 @@
 #define KVM_PRIVATE_MEM_SLOTS 4
 
 #define KVM_PIO_PAGE_OFFSET 1
+#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
 
 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
@@ -79,6 +80,7 @@
 #define KVM_MIN_FREE_MMU_PAGES 5
 #define KVM_REFILL_PAGES 25
 #define KVM_MAX_CPUID_ENTRIES 40
+#define KVM_NR_VAR_MTRR 8
 
 extern spinlock_t kvm_lock;
 extern struct list_head vm_list;
@@ -109,12 +111,12 @@ enum {
 };
 
 enum {
+        VCPU_SREG_ES,
         VCPU_SREG_CS,
+        VCPU_SREG_SS,
         VCPU_SREG_DS,
-        VCPU_SREG_ES,
         VCPU_SREG_FS,
         VCPU_SREG_GS,
-        VCPU_SREG_SS,
         VCPU_SREG_TR,
         VCPU_SREG_LDTR,
 };
@@ -243,6 +245,7 @@ struct kvm_vcpu_arch {
         gfn_t last_pt_write_gfn;
         int   last_pt_write_count;
         u64  *last_pte_updated;
+        gfn_t last_pte_gfn;
 
         struct {
                 gfn_t gfn;      /* presumed gfn during guest pte update */
@@ -287,6 +290,10 @@ struct kvm_vcpu_arch {
         unsigned int hv_clock_tsc_khz;
         unsigned int time_offset;
         struct page *time_page;
+
+        bool nmi_pending;
+
+        u64 mtrr[0x100];
 };
 
 struct kvm_mem_alias {
@@ -344,6 +351,7 @@ struct kvm_vcpu_stat {
         u32 mmio_exits;
         u32 signal_exits;
         u32 irq_window_exits;
+        u32 nmi_window_exits;
         u32 halt_exits;
         u32 halt_wakeup;
         u32 request_irq_exits;
@@ -379,7 +387,6 @@ struct kvm_x86_ops {
         void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
         void (*vcpu_put)(struct kvm_vcpu *vcpu);
-        void (*vcpu_decache)(struct kvm_vcpu *vcpu);
 
         int (*set_guest_debug)(struct kvm_vcpu *vcpu,
                                struct kvm_debug_guest *dbg);
@@ -497,6 +504,10 @@ int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
                     unsigned long value);
 
+void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
+int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
+                                int type_bits, int seg);
+
 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
 
 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
@@ -515,6 +526,8 @@ void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
                            u32 error_code);
 
+void kvm_inject_nmi(struct kvm_vcpu *vcpu);
+
 void fx_init(struct kvm_vcpu *vcpu);
 
 int emulator_read_std(unsigned long addr,
@@ -554,55 +567,53 @@ static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
         return (struct kvm_mmu_page *)page_private(page);
 }
 
-static inline u16 read_fs(void)
+static inline u16 kvm_read_fs(void)
 {
         u16 seg;
         asm("mov %%fs, %0" : "=g"(seg));
         return seg;
 }
 
-static inline u16 read_gs(void)
+static inline u16 kvm_read_gs(void)
 {
         u16 seg;
         asm("mov %%gs, %0" : "=g"(seg));
         return seg;
 }
 
-static inline u16 read_ldt(void)
+static inline u16 kvm_read_ldt(void)
 {
         u16 ldt;
         asm("sldt %0" : "=g"(ldt));
         return ldt;
 }
 
-static inline void load_fs(u16 sel)
+static inline void kvm_load_fs(u16 sel)
 {
         asm("mov %0, %%fs" : : "rm"(sel));
 }
 
-static inline void load_gs(u16 sel)
+static inline void kvm_load_gs(u16 sel)
 {
         asm("mov %0, %%gs" : : "rm"(sel));
 }
 
-#ifndef load_ldt
-static inline void load_ldt(u16 sel)
+static inline void kvm_load_ldt(u16 sel)
 {
         asm("lldt %0" : : "rm"(sel));
 }
-#endif
 
-static inline void get_idt(struct descriptor_table *table)
+static inline void kvm_get_idt(struct descriptor_table *table)
 {
         asm("sidt %0" : "=m"(*table));
 }
 
-static inline void get_gdt(struct descriptor_table *table)
+static inline void kvm_get_gdt(struct descriptor_table *table)
 {
         asm("sgdt %0" : "=m"(*table));
 }
 
-static inline unsigned long read_tr_base(void)
+static inline unsigned long kvm_read_tr_base(void)
 {
         u16 tr;
         asm("str %0" : "=g"(tr));
@@ -619,17 +630,17 @@ static inline unsigned long read_msr(unsigned long msr)
 }
 #endif
 
-static inline void fx_save(struct i387_fxsave_struct *image)
+static inline void kvm_fx_save(struct i387_fxsave_struct *image)
 {
         asm("fxsave (%0)":: "r" (image));
 }
 
-static inline void fx_restore(struct i387_fxsave_struct *image)
+static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
 {
         asm("fxrstor (%0)":: "r" (image));
 }
 
-static inline void fx_finit(void)
+static inline void kvm_fx_finit(void)
 {
         asm("finit");
 }
@@ -691,4 +702,30 @@ enum {
         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
                                                 vcpu, 0, 0, 0, 0, 0, 0)
 
+#ifdef CONFIG_64BIT
+# define KVM_EX_ENTRY ".quad"
+# define KVM_EX_PUSH "pushq"
+#else
+# define KVM_EX_ENTRY ".long"
+# define KVM_EX_PUSH "pushl"
+#endif
+
+/*
+ * Hardware virtualization extension instructions may fault if a
+ * reboot turns off virtualization while processes are running.
+ * Trap the fault and ignore the instruction if that happens.
+ */
+asmlinkage void kvm_handle_fault_on_reboot(void);
+
+#define __kvm_handle_fault_on_reboot(insn) \
+        "666: " insn "\n\t" \
+        ".pushsection .text.fixup, \"ax\" \n" \
+        "667: \n\t" \
+        KVM_EX_PUSH " $666b \n\t" \
+        "jmp kvm_handle_fault_on_reboot \n\t" \
+        ".popsection \n\t" \
+        ".pushsection __ex_table, \"a\" \n\t" \
+        KVM_EX_ENTRY " 666b, 667b \n\t" \
+        ".popsection"
+
 #endif